CRITICAL9.9
GO-2025-3769
Mattermost allows authenticated users to write files to arbitrary locations in github.com/mattermost/mattermost-server
Quick fix
GO-2025-3769 — github.com/mattermost/mattermost-server: upgrade to the fixed version with the command below.
go get github.com/mattermost/mattermost-server@v0.0.0-20250519205859-65aec10162f6Details
Mattermost allows authenticated users to write files to arbitrary locations in github.com/mattermost/mattermost-server
Are you affected?
Enter the version of the package you're using.
Affected packages
Go/github.com/mattermost/mattermost-server
Introduced in:
0Fixed in: 0.0.0-20250519205859-65aec10162f6Fix
go get github.com/mattermost/mattermost-server@v0.0.0-20250519205859-65aec10162f6Go/github.com/mattermost/mattermost-server/v5
Introduced in:
0No fixed version published yet for github.com/mattermost/mattermost-server/v5 (go modules). Pin to a known-safe version or switch to an alternative.
Go/github.com/mattermost/mattermost-server/v6
Introduced in:
0No fixed version published yet for github.com/mattermost/mattermost-server/v6 (go modules). Pin to a known-safe version or switch to an alternative.
Go/github.com/mattermost/mattermost/server/v8
Introduced in:
0Fixed in: 8.0.0-20250519205859-65aec10162f6Fix
go get github.com/mattermost/mattermost/server/v8@v8.0.0-20250519205859-65aec10162f6